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Finding the Fourth Proportional to 500.25, 750.78 and 448.14

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Solution

The fourth proportional to 500.25, 750.78 and 448.14 is: 672.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    500.25 : 750.78 = 448.14 : x
  2. Step 2: Convert to fraction form
    500.25/750.78 = 448.14/x
  3. Step 3: Cross multiply
    500.25x = 750.78 × 448.14
  4. Step 4: Simplify right side
    500.25x = 336,454.55
  5. Step 5: Solve for x
    x = 336,454.55/500.25
  6. Step 6: Final answer
    x = 672.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.